package com.itlaobing.binary;

import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Part;
import java.io.IOException;
import java.io.PrintWriter;

@WebServlet("/myself/single")
@MultipartConfig(location = "D:/upload")
public class MyselfSingleUploadServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        throw new IllegalStateException("不支持 GET 方式");
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");

        response.setHeader("content-type","text/html ; charset=UTF-8");

        PrintWriter out = response.getWriter();

        Part part = request.getPart("upfile");

        if (part != null){
            String filename = part.getSubmittedFileName();
            //文件名不为 空 不为 空串
            if (filename!=null && filename.length() >0){
                //文件内容保存在约定位置
                part.write(filename);
                out.println("<div style='text-align:center ;'>");
                out.println("文件【 " + filename +"】上传成功");
                out.println("</div>");
                return;
            }
        }
        out.println("<h3 align='center'> 上传失败</h3>");
    }
}
